thousands wash up on northern california beaches. >> to be honest, researchers have no idea why this is happening. >> a fourth pipe bomb in four days found near an east bay elementary school. >> something blow up or what is it a gunshot? >> we can only hope there aren't more. >> family going you there a difficult time. we are strong and we will continue to stay strong. >> tributes around the world and the bay area for mexican- american singer jenni rivera. >> there's mournings and vigils. >> legislators in michigan are set as to vote on a right to work bill today. >> need to do what we can to get the economy rolling full speed again. >> what they're really talking about is giving you the right to work for less money? >> look at the lights up there dude! >> mystery lights over san francisco bay. >> i am 100% sure this was a ufo. >> from across the bay to around the world, the stories that matter on "eyewitness news this morning." >> touchdown! ♪ [ music ] >> your realtime captioner: linda marie macdonald. >>> good morning. it's tuesday, december 11. i'm michelle griego. >> hi, every